Gun attachment.



H. NI. MASTEHTUN. GUN ATTACHMENT. APPLICATION mw luut 2s. 19m,

HUGH M. MASTEILTQN, 0F PAFJILRSGNj NEN JERSBL GUN ATTACHMENT.

Application flied June 23, 1915.

To all whom. it may conocen:

Be it known that l, HUGH M. MAsrEn'roN, a citizen of the United States, residing at Paterson, in the county ot Passaic and State of New Jersey, have invented a new and useful (lan Attachment, of which the following is a specification.

The device forming the subject matter oi' this application is an auxiliary barrel for a fire arm.

Une object of' the present invention is to provide a. means whereby a barrel having a bore of relatively large diameter, and ol center lire construction, may be adapted for use in connection with a barrel of smaller bore and using a rim lire cartridge.

lt is within the province of tbe disolosure to improve generally and to enhance the utility of devices of that type to which the pri-.sent invention appertaine.

lWith the above and other objects in view which will appear as the description prrr ceeds, the invention resides in the corali-ination and arrangement of parte and in the details` of construction hereinafter deerrribcd and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed ca n be made With-- in the scope of what is claimed, without all parting; from the spirit of the invention.

In the accompanying rlravvingzfA Figure .l is a longitudinal seetionai View of a shot gun barrel wherein the present invention has been mounted, parte being broken away;

Fig. Q is an end elevation of the structure shown in Fig. 1;

Fig. 3 is a cross section on the line 3-3 of Fig. 1;

Fig. 4 is an elevation showing the muzzle of the Structure embodied in Fig. l;

Fig. 5 is a Composite perspective View showing one of the carrying members and its extractor, the carrying member being in section.

'In the drawings there is shown a shot gun barrel 1 provided with a bolt lug 2, the barrel 1 having bores 3 equipped with seats 4 adapted to receive tue rim of a shell, the extrartor being Shovin at 5 and having grooves 6 ronstitutinp; parts of tho Seats 4. No novelty is claimed for the foregoing structure saving in so far as it ma)7 enter into combination with elements hereinafter described, and it will be understood readily by those skilled in the art, as the descrip specialisation of Letters Patent.

Patented Slept. 4, i917.

serial. No. 359er tion ol' the present invention progresses, that the levieo formingr the subiect matter ol' this application ir. adapted to be employed in connection with vilbcr a single barrolshot fun or :i double barrel shot gun. Although a matter ol common knowledge, it maybe statrfl invidvntally that shot gun cartridges at pri-ent are ol center fire construction.

ln rarrjvingf ont tlir present invention thereit; provided :an auxiliary barrel Tvvhich may be borifrl lor slml or ffaliberrd for ball, tlm lloraol' the' barrel T being equipped with :l sont il adapted to rorrive the rim of a rim liw rallrillge ill. The invention contemplates lbr sr ol a Carrying member 8 in the form ol' a time. bavin; r aneceentric opening' ll in which the brent-.b of the auxiliary barrel T is received. 'lhe carrying member 8 is provided. ls shown in Fig. 5 with a threaded opening :ll re-eoivinpj a set screw Ell .vlirrrbv lli rari-)vingl member may be ronnritw lo the allxibartA barrel adjustw ably 'ibo carrying member li embodies a LMarti rimanierontial flange l adapted to bv revolved in the wat f-t ol the main barrel l. ln the earl-ying member 8 there is formed a Slot l-l adapted to receive the shank 15 of an auxiliar?.| extraotor 1G comprising a beati il having a groove l?? er'mstitutiug a rontimmlion of tbe seat l) of the auxiliary barre-l rlbe bead i7 embodies a depending lf' adapted lo be refieivefl in the l-lormibu groove l of the extractor 5, so that' when ibo extraf-lor 5 actuated, the exirartor lll lwill lar aetneled also.

The invention comprises a Carrying member 22 having,r an eceentrio opening Q3 receiving the umm/.lv oi the auxiliary barrel 7, a set srrew 2l boing threaded into the member 22, and boina' adapted to engage the muzzle of the antiliartr barrel 7.

ln practioal opvraiion. the auxiliary barrel 7. together with lb carrying members 8 and 22 are localee.' inside of one of the bores oll the main barrel l. Owing to the eccentric position of the openings 11 and 23 in the respective carrying' members 8 and 22, the auxiliary barrel 7 will be lowered Sailiciently so that the firing pin (not shown) of the barrel 1 will eoact with the rim of the cartridge 10.

From the foregoing it will be observed that n large bore arm of center fire consti-notion :nav be converted. readily int() a small boro arm of rim fire construction. Sach an operation lcssene the 90st @f ShOOt` trsictur to pormt thel sariyng member to,

HUGH M. MASTERTON. 

